I think all foreigners should stop interfering in the internal affairs of Iraq. Those who want to come and help are welcome. Those who come to interfere and destroy are not.

I wish there were somebody I could be comfortable voting for. I might have to vote for Hillary Clinton, even though I have big reservations about her.

For the private sector to flourish, special privilege must give way to equal opportunity and equal risk for all.

Firing employees, that's unfortunately part of doing business.

History is just littered with problems that were solved that were supposed to be impossible.

Every math curriculum in the world is based on the idea of hand-calculating, and most of what you're teaching is how to calculate. And I think the resistance to this is very variable.

NATO is still the most remarkable alliance in history. It stuck together through 40 years of Cold War, and it then joined together to fight in Afghanistan. In the 1980s, I would not have thought this was going to be possible.